So well she acted all and every part
By turns--with that vivacious versatility,
Which many people take for want of heart.
They err--'tis merely what is call'd mobility,
A thing of temperament and not of art,
Though seeming so, from its supposed facility;
And false--though true; for surely they're sincerest
Who are strongly acted on by what is nearest.

Trials, temptations, disappointments -- all these help instead of hinder, if one uses them rightly. They not only test the fiber of a character, but strengthen it. Every conquered temptation represents a new fund of moral energy. Every trial endured and weathered in the right spirit makes a soul nobler and stronger than it was before.